Control Tower Features

MAIN POWER SWITCH / HEADPHONE MODE

The power switch is located on the lower left side of the Control Tower. Depress and hold for a few seconds to power on and off the system. This switch also acts to engage the headphones. Momentarily pressing the switch engages the headphones and removes power from the main speakers to save energy. While engaging the headphones, "HP" is indicated in the digital readout. In headphone mode, only the preamplifier and headphone amplifier are powered, giving the lowest possible noise floor. To return to speaker mode, momentarily press the power switch.

MAIN VOLUME CONTROL

The large main volume knob adjusts overall system volume. The digital volume display reads from "0 to 80" which corresponds to actual decibel increments. If this knob is turned slowly, the volume steps will be in 1dB increments. If the knob is turned quickly, the volume increase will be accordingly accelerated.

ADJUSTING CENTER, REAR AND SUBWOOFER LEVELS

Each of the center, rear and sub adjustment knobs will automatically change the main readout to display the current level. The corresponding level will show once the knob is turned in either direction, and will do so for approximately three seconds on the digital display. The adjustment knob range is from -9dB to +15dB, with default settings of "0".

Note: Possible gain range settings for each channel are -9dB to +15dB and will be retained as the main volume approaches 80dB. However, new settings made at high volumes will only be allowed as the total reaches 80dB. In other words, if the main volume reads 75dB, the boost will be limited to +5dB, and if main volume is set to 80dB (maximum), no boost is available.

HEADPHONE OUTPUT

The 1/8" stereo headphone output jack, located on the right-hand side of the control tower, is designed for personal listening with all quality headphones. The main volume control adjusts the headphone output while the speakers are muted. The HP volume level remains independently adjustable from the speaker volume settings.

PORTABLE MUSIC PLAYER INPUT

This convenient stereo input will accommodate a wide variety of audio sources without interrupting the computer setup. This also allows blending the auxiliary input signal with the (Main) soundcard signal source. MP3 portable audio players, gaming consoles, or any other source with a stereo mini-plug output are easily integrated into the ProMedia 5.1 playback system. This side input jack engages +10dB input sensitivity to help compensate for the lower output voltage of most portable players. To obtain the proper balance with the main signal, the level adjustments in the computer software and in the portable player will need to be adjusted. An example would be listening to an MP3 music player while surfing the net and blending in associated sounds from the Internet or game software. The benefits of this mixed sound may not always be desired, and the system owner will ultimately determine the use of this flexibility feature.

NOTE: The main volume and subwoofer level controls will affect this input source, while center and rear levels will not. The stereo source will only come through the front channels, since this is a two-channel signal source.

NOTE: During playback of MP3 files, overall sound quality may be perceptibly degraded (noise/distortion) compared to other audio sources such as CD. This is caused by the encoding method and quality of the MP3 file or the portable player itself. It is recommended that MP3 files be encoded at a minimum 128-bit rate.

OVERVIEW SPECIFICATIONS

FREQUENCY RESPONSE: 25Hz-20kHz (total system)

MAX. ACOUSTIC OUTPUT: 113dB peak

AMPLIFIER HEADROOM: 500 watts total < 0.5% THD+N typical HEADPHONE SECTION: 200mW max into 300 ohms

450mW max into 50 ohms

CONTROL TOWER: Smart power switch, doubles as headphone engage switch; Amber digital LED level indicator window for all modes; Main volume, center, surround and subwoofer level control memory (AC disconnect resets to default); Portable music player stereo mini- plug input with soundcard mixing function; Headphone jack for private listening, downmixes 5.1 into two channels; Direct path amplifier interface

SATELLITE: Sealed elliptical two-way enclosures with 0.75" metal polymer dome tweeter mated to MicroTractrix® Horn for enhanced high frequency detail; 3" long-throw mid-bass driver with convex dust caps for enhanced midrange dispersion

SUBWOOFER: Bass-reflex enclosure with front port and dual side- firing 8" long-throw drivers; flared tuned port; sixth- order enclosure design. Convex driver dust caps enhance subwoofer driver rigidity for unsurpassed high output linear bass response. Professional enclosure design includes eight T-nut screws to secure each driver to enclosure for heavy duty reliability.

AMPLIFIER: BASH® hybrid amplifier; discrete MOSFEToutput power section. Dual regulating power supplies allow maximum current delivery to the subwoofer, independent of satellites, for unparalleled dynamic range capability.

LIMITER: Protective limiting circuitry protects the drivers and amplifiers from extremely high volume playback while passing maximum power to all channels, per configuration.

SATELLITE (W/ BRACKET): 8.5" (21.6cm) H x 4.2" (10.7cm) W x 5.67" (14.4cm) D CENTER: 4.0" (10.2cm) H x 8.5" (21.6cm) W x 4.75" (12.1cm) D

SUBWOOFER: 11.25" (28.6cm) H x 11.875" (30.2cm) W x 15" (38.1cm) D SYSTEM WEIGHT: 43.5 lbs. (19.73kg)

SATELLITES (EACH): 2.4 lbs. (1.09kg) CENTER: 2.0 lbs. (.91kg)

CONTROL TOWER: 1.0 lbs. (.454kg) SUBWOOFER: 25.5 lbs. (11.57kg)